CN101340383A - Bandwidth determining method - Google Patents

Abstract

The invention discloses a method for confirming bandwidth. The method comprises: by utilizing the difference between RB quantity which the upper system bandwidth is corresponding to on the frequency domain and the maximum RB quantity which is occupied by PUCCH in a time slot and confirmed by the present system, the RB quantity which SRS bandwidth is corresponding to on the frequency domain is confirmed; wherein, the RB quantity which SRS bandwidth is corresponding to on the frequency domain is an even number, and the prime number factors of the RB quantity which SRS bandwidth is corresponding to on the frequency domain comprises at least one of the following: 2, 3 and 5. The maximum SRS bandwidth confirmed by the method for confirming bandwidth can avoid the interference between SRS and PUCCH, and the SRS bandwidth can be maximized.

Description

Bandwidth is determined method

Technical field

The present invention relates to the communications field, relate in particular to a kind of bandwidth and determine method.

Background technology

Fig. 1 shows Frequency Division Duplexing (FDD) (the Frequency Division Duplex of LTE system, abbreviate FDD as) frame structure schematic diagram under the pattern, this frame structure is called first kind frame structure again, be frame structure type 1, as shown in Figure 1, the radio frames of a 10ms is divided into the time slot of 20 0.5ms, 2 adjacent time slots are formed the subframe that length is 1ms, be that subframe i is made up of time slot 2i and 2i+1, i=0 wherein, 1, ..., 9, and 10 subframes under the fdd mode all are used for the transmission of uplink/downlink signals, on/distinguish by different frequency bands between descending.

Fig. 2 shows time division duplex (the Time Division Duplex of LTE system; abbreviate TDD as) frame structure schematic diagram under the pattern; this frame structure is called the second class frame structure again; be frame structure type 2; as shown in Figure 2; in this frame structure; a 10ms (307200Ts; radio frames 1ms=30720Ts) is divided into two fields; the length of each field is 5ms (153600Ts); and the subframe that it is 1ms that each field comprises 5 length; the effect of each subframe is as shown in table 1; wherein D represents to be used for the descending sub frame of transmission of downlink signal; U represents to be used to transmit the sub-frame of uplink of upward signal; in addition; a up/descending sub frame is divided into the time slot of 2 0.5ms again; S represents special subframe; special subframe comprises three special time slots; be descending pilot frequency time slot (Downlink Pilot Time Slot; abbreviate DwPTS as); protection is (Guard Period abbreviates GP as) and uplink pilot time slot (Uplink Pilot Time Slot abbreviates UpPTS as) at interval; in real system, on/index of descending preparation can be notified to mobile phone by broadcast.

On the table 1/descending preparation

Resource allocation in the LTE system is with Resource Block (Resource Block, abbreviate RB as) be unit, a RB accounts for 12 subcarrier (Resource Element on frequency domain, abbreviate RE as), on time domain, account for a time slot, promptly on time domain, occupy the SC-OFDM symbol of 7 regular circulation prefixes (Normal cyclic prefix abbreviates Normal CP as) or 6 extended cyclic prefix (Extended cyclic prefix, Extended CP).If up-link bandwidth corresponding RB on frequency domain adds up to N _RB ^UL, then the index of RB be 0,1 ..., N _RB ^UL-1, the index of RE is 0,1 ..., N _RB ^ULN _SC ^RB-1, wherein, N _SC ^RBIt is a RB pairing sub-carrier number on frequency domain.

Channel measurement reference signal (Sounding Reference Signal, Sounding RS abbreviates SRS as) bandwidth of signal adopts tree to prepare, it is the corresponding tree of each SRS bandwidth preparation (SRS bandwidth configuration), wherein, the maximum bandwidth of this SRS bandwidth preparation that top SRS bandwidth (SRS-Bandwidth) is corresponding, table 3～table 6 shows the SRS bandwidth preparation in the different upstream bandwidth scopes.Getting 1 with the preparation of the SRS bandwidth in the table 3 is example, and b=0 is a ground floor, is the top of tree, and the SRS bandwidth of this layer is 32 pairing bandwidth of RB, is the maximum SRS bandwidth of this SRS bandwidth preparation; B=1 is the second layer, and the SRS bandwidth of this layer is 16 pairing bandwidth of RB, and a SRS bandwidth of last layer splits into the SRS bandwidth of 2 second layers; B=2 is the 3rd layer, and the SRS bandwidth of this layer is 8 pairing bandwidth of RB, and a SRS bandwidth of last layer splits into 2 the 3rd layer SRS bandwidth; B=3 is the 4th layer, and the SRS bandwidth of this one deck is the bandwidth of 4 RB correspondences, and a SRS bandwidth of last layer splits into 2 the 4th layer SRS bandwidth.In addition, the subcarrier of SRS signal is to place at interval in same SRS frequency band, and as shown in Figure 3, this pectinate texture is filled and permitted more user send the SRS signal in same SRS bandwidth.

Table 2 $(6\≤N_{\mathrm{RB}}^{\mathrm{UL}}\≤40)$

Table 3 $(40<N_{\mathrm{RB}}^{\mathrm{UL}}\&le;60)$

Table 4 $(60{<N}_{\mathrm{RB}}^{\mathrm{UL}}\&le;80)$

Table 5 $(80<N_{\mathrm{RB}}^{\mathrm{UL}}\&le;110)$

Physical Uplink Control Channel (Physical uplink control channel, abbreviate PUCCH as) comprise six kinds of forms altogether, these six kinds of forms can be divided into two big classes, wherein, the first kind comprises 3 kinds of forms, be format 1, format 1a, format 1b, second class comprises 3 kinds of forms, i.e. format 2, format 2a, format 2b.First kind PUCCH is used for transmitting and scheduling request (Scheduling Request, abbreviate SR as) and correctly reply (Acknowledgement, abbreviate ACK as)/wrong responses (NegativeAcknowledgement, abbreviate NACK as) signaling, wherein, format 1 is used to transmit the ACK/NACK that ACK/NACK, format 1b that SR, format 1a be used to transmit single codeword stream are used to transmit two streams of code words.The second class PUCCH is mainly used in transmission (ChannelQuality Indicator, abbreviate CQI as), wherein format 2 is used to transmit CQI, and format2a is used for transmitting simultaneously the ACK/NACK of CQI and single codeword stream, and format 2b is used for transmitting simultaneously the ACK/NACK of CQI and two streams of code words.Wherein, first kind PUCCH shared RB quantity and down control channel unit (Control ChannelElement in a time slot, abbreviate CCE as) quantity relevant, be dynamic change, the second class PUCCH shared RB number needs in a time slot will be notified to all UE in the sub-district by broadcast channel, is semi-static preparation.

In addition, for fear of the waste of sign indicating number resource, the LTE system has also defined mixing RB, and whether the multiplexing first kind PUCCH channel and the second class PUCCH channel exist mixing RB to prepare in the system, and in a time slot, can only have one to mix RB at most.

Fig. 5 shows the channel architecture schematic diagram of PUCCH in the common sub-frame of uplink, and as shown in Figure 5, a PUCCH resource units accounts for two time slots, accounts for a RB on each time slot, and the frequency domain position of RB is symmetrical on two time slots.

At present, in the sub-frame of uplink of the common sub-frame of uplink of TDD system and FDD, when with maximum bandwidth emission SRS signal, remaining RB number is selected the preparation of SRS bandwidth after need removing the RB number that PUCCH reserves in the time slot according to the pairing RB quantity of up-link bandwidth, and then obtaining maximum SRS bandwidth (the SRS bandwidth of correspondence when being b=0), the purpose of doing like this is for fear of PUCCH and SRS interference between signals.For example the up-link bandwidth is 15 pairing bandwidth of RB, the interior RB number of reserving for PUCCH of time slot is 4, then the pairing RB number of remaining bandwidth is 11, so for fear of SRS signal and PUCCH interference between signals, SRS bandwidth preparation 6 in can only option table 3, then maximum SRS bandwidth is 8 pairing bandwidth of RB, as shown in Figure 6.

By top example as can be seen, system bandwidth is removed also surplus 11 pairing bandwidth of RB after the bandwidth that PUCCH reserves, and maximum SRS bandwidth has only the bandwidth of 8 RB correspondences, the chance that has the bandwidth of 3 RB not launch the SRS signal all the time, in the prior art, the granularity of SRS bandwidth is very thick, and when launching the SRS signal with maximum SRS bandwidth, some RB may have no chance to launch the SRS signal all the time.

Summary of the invention

Consider exist in the correlation technique when with maximum SRS bandwidth emission SRS signal, some RB may have no chance all the time to launch the problem of SRS signal and propose the present invention, for this reason, main purpose of the present invention is to provide a kind of bandwidth to determine method, to address the above problem.

According to an aspect of the present invention, provide a kind of bandwidth to determine method.

Bandwidth according to the present invention determines that method comprises: utilize the up-link bandwidth shared maximum RB quantity of PUCCH poor in corresponding RB quantity and the time slot of determining according to current system parameters on frequency domain, determine SRS bandwidth corresponding RB quantity on frequency domain; Wherein, SRS bandwidth pairing RB quantity on frequency domain is even number, and the prime factor of SRS bandwidth pairing RB quantity correspondence on frequency domain comprise following one of at least: 2,3,5.

Wherein, above-mentioned definite SRS bandwidth pairing RB quantity on frequency domain comprises: determine predetermined set according to prime factor, wherein, predetermined set comprises and is less than or equal to poor even number; With the RB quantity of the maximum even number in the predetermined set as SRS bandwidth correspondence on frequency domain.

Preferably, can determine SRS bandwidth pairing RB quantity on frequency domain according to following formula: $m_{\mathrm{SRS},0}^{\max }=\underset{{\mathrm{\&alpha;}}_2,{\mathrm{\&alpha;}}_3,{\mathrm{\&alpha;}}_5}{\max }(m_{\mathrm{SRS},0}=2^{1+{\mathrm{\&alpha;}}_2}\&CenterDot;3^{{\mathrm{\&alpha;}}_3}\&CenterDot;5^{{\mathrm{\&alpha;}}_5}|m_{\mathrm{SRS},0}\&le;(N_{\mathrm{RB}}^{\mathrm{UL}}-N_{\mathrm{PUCCH}}^{\mathrm{RB}})),$ Wherein, N _RB ^ULBe up-link bandwidth pairing RB quantity on frequency domain, N _PUCCH ^RBFor according to the shared maximum RB quantity of PUCCH in the determined time slot of current system parameters, and α ₂, α ₃, α ₅Be nonnegative integer.

According to an aspect of the present invention, provide a kind of bandwidth to determine method.

Bandwidth according to the present invention determines that method comprises: utilize the up-link bandwidth shared RB quantity of PUCCH poor in corresponding RB quantity and the time slot on frequency domain, determine the RB quantity of SRS bandwidth correspondence on frequency domain; Wherein, SRS bandwidth pairing RB quantity on frequency domain is even number, and the prime factor of SRS bandwidth pairing RB quantity correspondence on frequency domain comprise following one of at least: 2,3,5.

Wherein, above-mentioned definite SRS bandwidth pairing RB quantity on frequency domain comprises: determine predetermined set according to prime factor, wherein, predetermined set comprises and is less than or equal to poor even number; With the RB quantity of the maximum even number in the predetermined set as SRS bandwidth correspondence on frequency domain.

Preferably, can determine SRS bandwidth pairing RB quantity on frequency domain according to following formula: $m_{\mathrm{SRS},0}^{\max }=\underset{{\mathrm{\&alpha;}}_2,{\mathrm{\&alpha;}}_3,{\mathrm{\&alpha;}}_5}{\max }(m_{\mathrm{SRS},0}=2^{1+{\mathrm{\&alpha;}}_2}\&CenterDot;3^{{\mathrm{\&alpha;}}_3}\&CenterDot;5^{{\mathrm{\&alpha;}}_5}|m_{\mathrm{SRS},0}\&le;(N_{\mathrm{RB}}^{\mathrm{UL}}-N_{\mathrm{PUCCH}}^{\mathrm{RB}})),$ Wherein, N _RB ^ULBe up-link bandwidth pairing RB quantity on frequency domain, N _PUCCH ^RBBe the shared RB quantity of PUCCH in the time slot, and α ₂, α ₃, α ₅Be nonnegative integer.

According to an aspect of the present invention, provide a kind of bandwidth to determine method.

Bandwidth according to the present invention determines that method comprises: with up-link bandwidth poor with according to the shared maximum RB quantity of PUCCH in the determined time slot of current system parameters of pairing RB quantity on frequency domain, as SRS bandwidth corresponding RB quantity on frequency domain.

According to an aspect of the present invention, provide a kind of bandwidth to determine method.

Bandwidth according to the present invention determines that method comprises: with the up-link bandwidth shared RB quantity of PUCCH poor in corresponding RB quantity and the time slot on frequency domain, as the RB quantity of SRS bandwidth correspondence on frequency domain.

By above-mentioned at least one technical scheme of the present invention, in the interference that can avoid between SRS and PUCCH, make the maximization of SRS bandwidth by the determined maximum SRS bandwidth of this method.

Description of drawings

Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:

Fig. 1 is the schematic diagram according to the frame structure of the LTE system fdd mode of correlation technique;

Fig. 2 is the schematic diagram according to the frame structure of the LTE system TDD mode of correlation technique;

Fig. 3 is the schematic diagram according to the pectinate texture of the SRS signal of correlation technique;

Fig. 4 is the schematic diagram according to the tree of the SRS bandwidth of correlation technique;

Fig. 5 is the schematic diagram according to the PUCCH channel architecture of correlation technique;

Fig. 6 is according to the maximum bandwidth of the SRS signal of correlation technique and the schematic diagram of frequency domain position;

Fig. 7 is a flow chart of determining method according to the bandwidth of the inventive method embodiment one;

Fig. 8 is a flow chart of determining method according to the bandwidth of the inventive method embodiment two;

Fig. 9 is a flow chart of determining method according to the bandwidth of the inventive method embodiment three;

Figure 10 is a flow chart of determining method according to the bandwidth of the inventive method embodiment four.

Embodiment

Describe the present invention in detail below in conjunction with accompanying drawing.

Method embodiment one

According to the embodiment of the invention, provide a kind of bandwidth to determine method.

Fig. 7 is a flow chart of determining method according to the bandwidth of the embodiment of the invention, and as shown in Figure 7, this method may further comprise the steps:

Step S702, utilize the up-link bandwidth shared maximum RB quantity of PUCCH (Physical Uplink Control Channel) poor in corresponding RB (Resource Block) quantity and the time slot on frequency domain, determine the RB quantity of SRS (channel measurement reference signal) bandwidth correspondence on frequency domain, in this time slot the shared maximum RB quantity of PUCCH promptly in a time slot system be the RB quantity that PUCCH reserves, it is determined by current system parameters, and on each subframe, the RB quantity of reserving for PUCCH equates, wherein, above-mentioned SRS bandwidth pairing RB quantity on frequency domain is even number, and the prime factor of SRS bandwidth pairing RB quantity correspondence on frequency domain comprise following one of at least: 2,3,5.

Technical scheme by the embodiment of the invention provides in the interference that can avoid between SRS and PUCCH, makes the maximization of SRS bandwidth by the determined maximum SRS bandwidth of this method.

Wherein, in step S702, SRS bandwidth corresponding RB quantity on frequency domain will satisfy following three conditions simultaneously:

One, SRS bandwidth corresponding RB quantity on frequency domain is even number;

Two, the prime factor of expression SRS bandwidth corresponding RB quantity on frequency domain can only be 2,3,5;

Three, the SRS bandwidth is less than or equals up-link bandwidth pairing RB number on frequency domain in RB quantity corresponding on the frequency domain and deducts the RB quantity that PUCCH reserved in the time slot (promptly a time slot in the shared maximum RB quantity of PUCCH).

According to above-mentioned condition, when determining the RB quantity of SRS bandwidth correspondence on frequency domain, can carry out following processing: at first, determine the up-link bandwidth shared maximum RB quantity of PUCCH poor in pairing RB quantity and the time slot on frequency domain, then, determine predetermined set according to prime factor, wherein, predetermined set comprises and be less than or equal to poor even number, and is last, with the maximum even number in the predetermined set as SRS bandwidth corresponding RB quantity on frequency domain.

Particularly, can utilize following publicity to determine SRS bandwidth pairing RB quantity on frequency domain:

$m_{\mathrm{SRS},0}^{\max }=\underset{{\mathrm{\&alpha;}}_2,{\mathrm{\&alpha;}}_3,{\mathrm{\&alpha;}}_5}{\max }(m_{\mathrm{SRS},0}=2^{1+{\mathrm{\&alpha;}}_2}\&CenterDot;3^{{\mathrm{\&alpha;}}_3}\&CenterDot;5^{{\mathrm{\&alpha;}}_5}|m_{\mathrm{SRS},0}\&le;(N_{\mathrm{RB}}^{\mathrm{UL}}-N_{\mathrm{PUCCH}}^{\mathrm{RB}})),$

Wherein, N _RB ^ULBe up-link bandwidth pairing RB quantity on frequency domain, N _PUCCH ^RBBe the shared maximum RB quantity of PUCCH in the time slot, and α ₂, α ₃, α ₅Be nonnegative integer.

Example one

Scene one: the pairing RB quantity of up-link bandwidth $N_{\mathrm{RB}}^{\mathrm{UL}}=15,$ And the RB quantity of an interior PUCCH who reserves of time slot is 4, and promptly PUCCH shared maximum RB number in a time slot is 4 on each subframe.

According to above-mentioned definite SRS bandwidth condition that corresponding RB quantity will satisfy on frequency domain, particularly, then can utilize formula $m_{\mathrm{SRS},0}^{\max }=\underset{{\mathrm{\&alpha;}}_2,{\mathrm{\&alpha;}}_3,{\mathrm{\&alpha;}}_5}{\max }(m_{\mathrm{SRS},0}=2^{1+{\mathrm{\&alpha;}}_2}\&CenterDot;3^{{\mathrm{\&alpha;}}_3}\&CenterDot;5^{{\mathrm{\&alpha;}}_5}|m_{\mathrm{SRS},0}\&le;(N_{\mathrm{RB}}^{\mathrm{UL}}-N_{\mathrm{PUCCH}}^{\mathrm{RB}}))$ Calculate the pairing RB quantity of maximum SRS bandwidth, for $m_{\mathrm{SRS},0}^{\max }=10,$ The i.e. bandwidth of 10 RB correspondences, wherein α ₂=α ₃=0, α ₅=1.

Example two

Scene two: the pairing RB quantity of up-link bandwidth $N_{\mathrm{RB}}^{\mathrm{UL}}=25,$ And the RB quantity of an interior PUCCH who reserves of time slot is 6, and promptly PUCCH shared maximum RB number in a time slot is 6 on each subframe.

Identical with above-mentioned scene one, can utilize formula $m_{\mathrm{SRS},0}^{\max }=\underset{{\mathrm{\&alpha;}}_2,{\mathrm{\&alpha;}}_3,{\mathrm{\&alpha;}}_5}{\max }(m_{\mathrm{SRS},0}=2^{1+{\mathrm{\&alpha;}}_2}\&CenterDot;3^{{\mathrm{\&alpha;}}_3}\&CenterDot;5^{{\mathrm{\&alpha;}}_5}|m_{\mathrm{SRS},0}\&le;(N_{\mathrm{RB}}^{\mathrm{UL}}-N_{\mathrm{PUCCH}}^{\mathrm{RB}}))$ Calculate the pairing RB quantity of maximum SRS bandwidth, for $m_{\mathrm{SRS},0}^{\max }=18,$ The i.e. bandwidth of 18 RB correspondences, wherein α ₂=0, α ₃=2, α ₅=0.

Implement three

Scene three: the pairing RB quantity of up-link bandwidth $N_{\mathrm{RB}}^{\mathrm{UL}}=50,$ And the RB quantity of an interior PUCCH who reserves of time slot is 20, and promptly PUCCH shared maximum RB number in a time slot is 20 on each subframe.

Equally, at scene three, can utilize formula $m_{\mathrm{SRS},0}^{\max }=\underset{{\mathrm{\&alpha;}}_2,{\mathrm{\&alpha;}}_3,{\mathrm{\&alpha;}}_5}{\max }(m_{\mathrm{SRS},0}=2^{1+{\mathrm{\&alpha;}}_2}\&CenterDot;3^{{\mathrm{\&alpha;}}_3}\&CenterDot;5^{{\mathrm{\&alpha;}}_5}|m_{\mathrm{SRS},0}\&le;(N_{\mathrm{RB}}^{\mathrm{UL}}-N_{\mathrm{PUCCH}}^{\mathrm{RB}}))$ Calculate the RB quantity of maximum SRS bandwidth correspondence, for $m_{\mathrm{SRS},0}^{\max }=30,$ The i.e. bandwidth of 30 RB correspondences, wherein α ₂=0, α ₃=1, α ₅=1.

Method embodiment two

According to the embodiment of the invention, provide a kind of bandwidth to determine method.

Fig. 8 is a flow chart of determining method according to the bandwidth of the inventive method embodiment, and as shown in Figure 8, this method may further comprise the steps:

Step S802, utilize the up-link bandwidth shared RB quantity of PUCCH poor in corresponding RB quantity and the time slot on frequency domain, determine the RB quantity of SRS bandwidth correspondence on frequency domain, wherein, above-mentioned SRS bandwidth pairing RB quantity on frequency domain is even number, and the prime factor of SRS bandwidth pairing RB quantity correspondence on frequency domain comprise following one of at least: 2,3,5.

Technical scheme by the embodiment of the invention provides in the interference that can avoid between SRS and PUCCH, makes the maximization of SRS bandwidth by the determined maximum SRS bandwidth of this method.

Wherein, in step S802, SRS bandwidth corresponding RB quantity on frequency domain will satisfy following three conditions simultaneously:

One, SRS bandwidth corresponding RB quantity on frequency domain is even number;

Two, the prime factor of expression SRS bandwidth corresponding RB quantity on frequency domain can only be 2,3,5;

Three, the SRS bandwidth is less than or equals up-link bandwidth pairing RB number on frequency domain in RB quantity corresponding on the frequency domain and deducts the shared RB quantity of PUCCH in the time slot.

According to above-mentioned condition, when determining the RB quantity of SRS bandwidth correspondence on frequency domain, can carry out following processing: at first, determine the up-link bandwidth shared RB quantity of PUCCH poor in pairing RB quantity and the time slot on frequency domain, then, determine predetermined set according to prime factor, wherein, predetermined set comprises and be less than or equal to poor even number, and is last, with the maximum even number in the predetermined set as SRS bandwidth corresponding RB quantity on frequency domain.

Particularly, can utilize following publicity to determine SRS bandwidth pairing RB quantity on frequency domain:

$m_{\mathrm{SRS},0}^{\max }=\underset{{\mathrm{\&alpha;}}_2,{\mathrm{\&alpha;}}_3,{\mathrm{\&alpha;}}_5}{\max }(m_{\mathrm{SRS},0}=2^{1+{\mathrm{\&alpha;}}_2}\&CenterDot;3^{{\mathrm{\&alpha;}}_3}\&CenterDot;5^{{\mathrm{\&alpha;}}_5}|m_{\mathrm{SRS},0}\&le;(N_{\mathrm{RB}}^{\mathrm{UL}}-N_{\mathrm{PUCCH}}^{\mathrm{RB}})),$

Wherein, N _RB ^ULBe up-link bandwidth pairing RB quantity on frequency domain, N _PUCCH ^RBBe the shared maximum RB quantity of PUCCH in the time slot, and α ₂, α ₃, α ₅Be nonnegative integer.

Implement four

Scene four: the pairing RB quantity of up-link bandwidth $N_{\mathrm{RB}}^{\mathrm{UL}}=6,$ And the shared RB quantity of PUCCH is 0 in the time slot.

At scene four, can utilize formula $m_{\mathrm{SRS},0}^{\max }=\underset{{\mathrm{\&alpha;}}_2,{\mathrm{\&alpha;}}_3,{\mathrm{\&alpha;}}_5}{\max }(m_{\mathrm{SRS},0}=2^{1+{\mathrm{\&alpha;}}_2}\&CenterDot;3^{{\mathrm{\&alpha;}}_3}\&CenterDot;5^{{\mathrm{\&alpha;}}_5}|m_{\mathrm{SRS},0}\&le;(N_{\mathrm{RB}}^{\mathrm{UL}}-N_{\mathrm{PUCCH}}^{\mathrm{RB}}))$ Calculate the RB quantity of maximum SRS bandwidth correspondence, for $m_{\mathrm{SRS},0}^{\max }=6,$ The i.e. bandwidth of 6 RB correspondences.α wherein ₂=0, α ₃=1, α ₅=0.

Method embodiment three

According to the embodiment of the invention, provide a kind of bandwidth to determine method.

Determine that according to the bandwidth of the inventive method embodiment method comprises following processing: with up-link bandwidth poor with according to the shared maximum RB quantity of PUCCH in the determined time slot of current system parameters of pairing RB quantity on frequency domain, as SRS bandwidth corresponding RB quantity on frequency domain.Wherein, in the above-mentioned time slot the shared maximum RB quantity of PUCCH promptly in a time slot system be the RB quantity that PUCCH reserves, and on each subframe, the RB quantity of reserving for PUCCH equates,

Implement five

Scene five: the pairing RB quantity of up-link bandwidth $N_{\mathrm{RB}}^{\mathrm{UL}}=15,$ And the RB quantity that PUCCH reserves in the time slot that obtains according to system parameters is 4, and promptly PUCCH shared maximum RB number in a time slot is 4 on each subframe.

At scene five, can utilize formula $m_{\mathrm{SRS},0}^{\max }=N_{\mathrm{RB}}^{\mathrm{UL}}-N_{\mathrm{PUCCH}}^{\mathrm{RB}}$ Calculate the RB quantity of maximum SRS bandwidth correspondence, for $m_{\mathrm{SRS},0}^{\max }=11,$ The i.e. bandwidth of 11 RB correspondences.

Method embodiment four

According to the embodiment of the invention, provide a kind of bandwidth to determine method.

Determine that according to the bandwidth of the inventive method embodiment method comprises following processing: with the up-link bandwidth shared RB quantity of PUCCH poor in corresponding RB quantity and the time slot on frequency domain, as the RB quantity of SRS bandwidth correspondence on frequency domain.

Implement six

Scene six: the pairing RB quantity of up-link bandwidth $N_{\mathrm{RB}}^{\mathrm{UL}}=15,$ And the shared RB quantity of PUCCH is 4 in the time slot.

At scene six, can utilize formula $m_{\mathrm{SRS},0}^{\max }=N_{\mathrm{RB}}^{\mathrm{UL}}-N_{\mathrm{PUCCH}}^{\mathrm{RB}}$ Calculate the RB quantity of maximum SRS bandwidth correspondence, for $m_{\mathrm{SRS},0}^{\max }=11,$ The i.e. bandwidth of 11 RB correspondences.

As mentioned above, determine method by means of bandwidth provided by the invention, adopt the determined maximum SRS bandwidth of said method when can avoiding SRS and PUCCH to disturb, make maximum SRS bandwidth maximization, increase the scope that up channel is measured, improve the accuracy of resource allocation and scheduling, in addition, this method can also be simplified the complexity of discrete Fourier transform (DFT), improves the efficient of ofdm system.

The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (8)

1. a bandwidth is determined method, it is characterized in that, comprising:

Utilize the up-link bandwidth on frequency domain in corresponding Resource Block quantity and the time slot of determining according to current system parameters Physical Uplink Control Channel be the poor of the shared maximum resource number of blocks of PUCCH, determine that the channel measurement reference signal is SRS bandwidth corresponding Resource Block quantity on frequency domain;

Wherein, described SRS bandwidth pairing Resource Block quantity on frequency domain is even number, and the prime factor of described SRS bandwidth pairing Resource Block quantity correspondence on frequency domain comprise following one of at least: 2,3,5.

2. method according to claim 1 is characterized in that, described definite SRS bandwidth pairing Resource Block quantity on frequency domain comprises:

Determine predetermined set according to described prime factor, wherein, described predetermined set comprises the even number that is less than or equal to described difference;

With the Resource Block quantity of the maximum even number in the described predetermined set as described SRS bandwidth correspondence on frequency domain.

3. method according to claim 2 is characterized in that, determines SRS bandwidth pairing Resource Block quantity on frequency domain according to following formula:

$m_{\mathrm{SRS},0}^{\max }=\underset{{\mathrm{\&alpha;}}_2,{\mathrm{\&alpha;}}_3,{\mathrm{\&alpha;}}_5}{\max }(m_{\mathrm{SRS},0}=2^{1+{\mathrm{\&alpha;}}_2}\&CenterDot;3^{{\mathrm{\&alpha;}}_3}\&CenterDot;5^{{\mathrm{\&alpha;}}_5}{|m}_{\mathrm{SRS},0}\&le;(N_{\mathrm{RB}}^{\mathrm{UL}}-N_{\mathrm{PUCCH}}^{\mathrm{RB}})),$

Wherein, N _RB ^ULBe described up-link bandwidth pairing Resource Block quantity on frequency domain, N _PUCCH ^RBFor according to the shared maximum resource number of blocks of PUCCH in the determined described time slot of current system parameters, and α ₂, α ₃, α ₅Be nonnegative integer.

4. a bandwidth is determined method, it is characterized in that, comprising:

Utilize the up-link bandwidth shared Resource Block quantity of PUCCH poor in corresponding Resource Block quantity and the time slot on frequency domain, determine the Resource Block quantity of SRS bandwidth correspondence on frequency domain;

Wherein, described SRS bandwidth pairing Resource Block quantity on frequency domain is even number, and the prime factor of described SRS bandwidth pairing Resource Block quantity correspondence on frequency domain comprise following one of at least: 2,3,5.

5. method according to claim 4 is characterized in that, described definite SRS bandwidth pairing Resource Block quantity on frequency domain comprises:

Determine predetermined set according to described prime factor, wherein, described predetermined set comprises the even number that is less than or equal to described difference;

With the Resource Block quantity of the maximum even number in the described predetermined set as described SRS bandwidth correspondence on frequency domain.

6. method according to claim 5 is characterized in that, determines SRS bandwidth pairing Resource Block quantity on frequency domain according to following formula:

$m_{\mathrm{SRS},0}^{\max }=\underset{{\mathrm{\&alpha;}}_2,{\mathrm{\&alpha;}}_3,{\mathrm{\&alpha;}}_5}{\max }(m_{\mathrm{SRS},0}=2^{1+{\mathrm{\&alpha;}}_2}\&CenterDot;3^{{\mathrm{\&alpha;}}_3}\&CenterDot;5^{{\mathrm{\&alpha;}}_5}{|m}_{\mathrm{SRS},0}\&le;(N_{\mathrm{RB}}^{\mathrm{UL}}-N_{\mathrm{PUCCH}}^{\mathrm{RB}})),$

Wherein, N _RB ^ULBe described up-link bandwidth pairing Resource Block quantity on frequency domain, N _PUCCH ^RBBe the shared Resource Block quantity of PUCCH in the described time slot, and α ₂, α ₃, α ₅Be nonnegative integer.

7. a bandwidth is determined method, it is characterized in that, comprising:

With up-link bandwidth poor with according to the shared maximum resource number of blocks of PUCCH in the determined time slot of current system parameters of pairing Resource Block quantity on frequency domain, as SRS bandwidth corresponding Resource Block quantity on frequency domain.

8. a bandwidth is determined method, it is characterized in that, comprising:

With the up-link bandwidth shared Resource Block quantity of PUCCH poor in corresponding Resource Block quantity and the time slot on frequency domain, as the Resource Block quantity of SRS bandwidth correspondence on frequency domain.

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